Here is another minor idea that I want (but not yet sure how to do). I've already made the "Search the Internet" plugin for books, but I also want a "Search local drive" plugin. This would let me configure a root directory (to my stash of unprocessed GBs of books) and then spawn a windows explorer search for an author.

For instance I currently do stuff like type "name:child name:lee" into the search box in windows explorer to get it to show all the directories and files for that author, which I will then drag to a working folder for processing.

Unfortunately Microsoft don't seem to make it very easy to automate this. I know it is theoretically possible to create a saved search file and launch that with explorer but the internal complexity of it seems immense and struggling to find documentation for it. If anyone has done/knows of anything doing this let me know...

Using third party search alternatives could be another option I guess. Again if anyone has any recommendations let me know.